Lecture 12: Alcohols, Ethers, Epoxides, Sulfides.
第十二堂：醇类，醚类，环氧化物，硫化物。
Due date: A week after Lecture 12 . Please note that you risk of an Incomplete if you miss the due date.
缴交期限：第十二次讲授后一周。请注意如果未按时缴交则将有课程未完成的风险。
There are 12 members with double accounts at Dollars Factory, we won't lecture anyone here, after all, the ones with more than one account know that's not allowed.
有12名成员有多帐号，我们将不这里责骂任何人，终究，有多个账户的用户是不被允许的。
His lecture, "My Brief History," was not all 12 quarks and black holes.
他发表的题为“我的时间简史”的演讲并不全是夸克和黑洞。
Those in the intervention group were given health education for nearly 12 weeks, including lecture, group and individual coaching, companion education, and other health education activities.
干预组进行了近12周健康教育选修课，采用了课堂教学、团体和个别辅导、同伴教育等，分别采用症状自评量表(SCL - 90)进行前后对照测试。
Those in the intervention group were given health education for nearly 12 weeks, including lecture, group and individual coaching, companion education, and other health education activities.
干预组进行了近12周健康教育选修课，采用了课堂教学、团体和个别辅导、同伴教育等，分别采用症状自评量表(SCL - 90)进行前后对照测试。
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